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Geo-referencing of aerial imagery using embedded image identifiers

  • US 20040161131A1
  • Filed: 02/13/2004
  • Published: 08/19/2004
  • Est. Priority Date: 03/05/2001
  • Status: Active Grant
First Claim
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1. A method of steganographically embedding auxiliary data in imagery comprising:

  • receiving imagery including a first geolocation estimate steganographically embedded therein, wherein the first geolocation estimate corresponds to at least one area depicted in the imagery;

    determining a second geolocation estimate, the second geolocation estimate comprising a more precise geolocation estimate, relative to the first geolocation estimate, for the at least one area depicted in the imagery; and

    steganographically embedding the second geolocation estimate in the imagery.

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